Quote:
Originally Posted by Joshua Bunn
Hi Greg.
I think you will find the 55mm lens does indeed have 5 times the apeture but it collects 24 times more light on rough figures.
That is why i like using longer focal length fast primes for milkyway shots too ��
Cheers, Josh
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Working out the area of each and comparing? Yes I suppose once you add pi and square the radius in their the areas get larger quickly.
I take it you don't mind the extra work of taking so many more images to stitch? Do you still stack multiple images at 50mm?
Greg.